package com.isoft.c2team3service2.mapper;

import com.baomidou.mybatisplus.core.mapper.BaseMapper;
import com.isoft.c2team3service2.entity.Concert;
import org.apache.ibatis.annotations.Mapper;
import org.apache.ibatis.annotations.Select;

import java.util.List;

/**
 * @author 蓝莓
 * @date 2025/7/4 11:31
 */
@Mapper
public interface ConcertMapper extends BaseMapper<Concert> {
    @Select("SELECT cities FROM concert")
    List<String> se();
    @Select("SELECT tickets FROM concert")
    List<Double> le();
    @Select("SELECT numbers FROM concert")
    List<Double> ec();
}
